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ECE :: Digital Electronics

  1. In a JK flip flop output Qn = 1 and it does not change when clock pulse is applied. The possible combination of Jn and Kn is (X denotes don't care)

  2. A.
    X and 0
    B.
    X and 1
    C.
    0 and X
    D.
    1 and X

  3. The minimum decimal equivalent of the number 11C0 is

  4. A.
    183
    B.
    194
    C.
    268
    D.
    269

  5. VF glows with __________ colour when activated.

  6. A.
    Red
    B.
    Orange
    C.
    Bluish green
    D.
    none of these

  7. The simplified logic expression for the circuit of the given figure is

  8. A.
    Y = A
    B.
    Y = AB
    C.
    Y = A + B
    D.
    Y + A + B

  9. The code which provides for parity check is

  10. A.
    Baudot
    B.
    ASCII
    C.
    EBCDIC
    D.
    Excess-3

  11. The address to which a software or hardware restart branches is known as

  12. A.
    Vector location
    B.
    SID
    C.
    SOD
    D.
    TRAP

  13. Which device uses Pneumatic fluid?

  14. A.
    LED
    B.
    LCD
    C.
    VF display
    D.
    None of these

  15. DeMorgan's first theorem is =

  16. A.
    A . A = 0
    B.
    A = A
    C.
    A + B = A . B
    D.
    AB = A + B